Distanceguy wrote:
So what I'm understanding is, that I am probably over training and underperforming (that 9:45 was indoor so it was recently) and I could do a lot better and run a lot faster if I had not been doing my easy runs so fast? Because I would really like to run in the low 9:30s so another question, is that time pretty good for being pretty much drained (I do my easy runs fast as you can see and my coach has us do a lot of hard workouts) and if I changed it all up and did my easy runs a lot easier will a low 9:30 be a realistic time outdoor?
Correct. Two things are happening when you run at about 70% of max heart rate. 1) Your work is totally aerobic so that your muscles are able to maximize the development of the mitochondria that make it possible to carry oxygen to the muscles. Anaerobic work develops different systems. That's fine if your races are all anaerobic (sprints and up to about 1KM), but a two mile or 5KM or longer has a big aerobic component that needs addressing. 2) When you run at a slow pace and stay totally aerobic, you don't damage your muscles (with lactic acid, etc.) and therefore you don't have anything to recover from. It's the anaerobic work that leaves you beat up and sore and in need of recovery. Theoretically, if you keep your pace slow enough, you can run nearly infinite miles without breaking down. In theory :-)
Another point that I haven't seen mentioned here; endurance (aerobic conditioning) takes a long time to develop. Many months (and really, years). Speed (anaerobic conditioning) comes much quicker. Weeks. So putting in the longest base of very easy running that you can fit into your year will pay huge dividends.
Read Arthur Lydiard's work. He tended to write with a bit of hyperbole but his theories have been proven correct. Also Google HADD Training Theory. That'll get you deep into the weeds of training for distance runners and while similar to Lydiard's work, it is not at all hyperbolic.
Bottom line, as several people have said, run your easy runs very easy so you can run your hard runs very hard.